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Siemens simatic c7-621 Hardware Installation Guide

Siemens simatic c7-621
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7-6
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01
4-wire transducers have a separate power supply U
H
. Figure 7-4 shows the
connection of sensors as 4-wire measuring transducers to a non-floating
analog input.
.
.
.
Sensor
e.g. pressure
meas.
Input 24V DC
Grounding bar
ADC
Logic
AI1-U
AI1-M
C7-CPU
AI2-U
AI2-M
L+
M
NC
NC
Analog inputs
Functional ground
M
C7-621
+
-
+
-
U
H
transducer
4-wire
P
P
Figure 7-4 Connecting 4-Wire Transducers to a Non-Floating Analog Input
Note
2-wire transducers cannot be operated with the C7 units.
Connecting
Sensors as 4-Wire
Transducers
C7-621 Analog I/Os

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Siemens simatic c7-621 Specifications

General IconGeneral
BrandSiemens
Modelsimatic c7-621
CategoryControl Systems
LanguageEnglish

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